apiVersion: v1
kind: ConfigMap
metadata:
  name: promtail-config
  namespace: default
data:
  promtail.yaml: |
    server:
      http_listen_port: 9080
      grpc_listen_port: 0

    positions:
      filename: /tmp/positions.yaml

    clients:
      - url: http://loki:3100/loki/api/v1/push

    scrape_configs:
      - job_name: kubernetes-pods
        kubernetes_sd_configs:
          - role: pod
        pipeline_stages:
          # 解析 zap 输出的 JSON 日志，提取结构化字段
          - json:
              expressions:
                level:     level
                traceID:   traceID
                spanID:    spanID
                caller:    caller
                pod:       pod
                namespace: namespace
                node:      node
          # 将关键字段提升为 Loki Label,支持在 Grafana 中按实例/Trace 过滤
          - labels:
              level:
              traceID:
              pod:
              namespace:
              node:
        relabel_configs:
          - source_labels: [__meta_kubernetes_namespace]
            target_label: namespace
          - source_labels: [__meta_kubernetes_pod_name]
            target_label: pod
          - source_labels: [__meta_kubernetes_pod_container_name]
            target_label: container
          - source_labels: [__meta_kubernetes_pod_label_app]
            target_label: app
          # 只采集有 app label 的 Pod
          - source_labels: [__meta_kubernetes_pod_label_app]
            action: keep
            regex: .+